Trucks battery won't stay charged over night..

Asked by Jan 22, 2016 at 09:19 PM about the 1999 Dodge Ram 1500 4 Dr Laramie SLT 4WD Extended Cab SB

Question type: Maintenance & Repair

My 99 Dodge Ram 1500 5.9 V8 4x4 won't stay
charged when left for more than at least 12 hours
over night. Had AAA mechanic come out and put 2
new batteries in it and test; starter, battery,
alternator which all is good. He checked a couple of
things like all fuses in box and my stereo to see if
power was being pulled but nothing.. I've tried
driving it after new battery was put into it and it
starts and runs. When I turn it off you can hear a
buzzing or humming sound coming from around the
engine compartment but can't seem to find where
noise is coming from.. When I did drive it to work I
noticed that and when I got off the battery was
completely dead it wouldn't even jump start.
Mechanic said could be a short in the wiring
somewhere but that could be anywhere and take a
shop time and a lot of money to find and fix..Can
anyone help if any ideas what exactly it could be if it
could be a simple fix, please???

1 Answer

95,225

Before you can do any testing the battery needs to be fully recharged, so disconnect 1 battery cable and recharge the battery, next make sure everything is turned off, then just reconnect for a few seconds, then disconnect a cable and put a test light in between the battery post and cable terminal end, if the light turns on then you have a major battery draw, so the first thing to electrically disconnect is the alternator, if the light goes out then you have found your problem, if not then start removing the fuses one at a time, noting where each fuse goes, keep removing fuses until the light goes out, then find out what is on that fuse and trace down the problem componet or wiring and repair or replace, then start putting the fuses back in one at a time just make sure you didn't miss anything and finally reconnect the alternator, if the light stays off then your battery drain is fixed. Note: on some vehicles. They have a parasitic draw this will make the test light glow very dim that light is normal as long as it is just a glow. HTH

Your Answer

Add photo

Related Questions

  • Trucks battery won't stay charged over night.. 1 answer

    My 99 Dodge Ram 1500 5.9 V8 4x4 won't stay charged when left for more than at least 12 hours over night. Had AAA mechanic come out and put 2 new batteries in it and test; starter, battery, alterna...

    1999 Dodge Ram 1500 4 Dr Laramie SLT 4WD Extended Cab SB

    -

    Maintenance & Repair

  • turn signals won't stay on 2 answers

    turn signal lights won't stay on in my dodge 1999 ram 6 cyl truck. they go on and then off with the arm engauged down or up .

    1999 Dodge Ram 1500

    -

    Maintenance & Repair

  • Won't stay started 1 answer

    I have a 1999 dodge ram 1500 I change the crackshaft sensor and the throttle position sensor started running for a while drive a round the block when I cut it off I it won't start back up trys bu...

    1999 Dodge Ram 1500

    -

    Maintenance & Repair

  • Dodge Ram won't stay running! 2 answers

    My daughter loves to go mudding! She went mudding in her 1997 Ram 1500 with her 36" tires and when she was on her way home, all the power in it shut off. No lights, radio, directionals. I know she had...

    1997 Dodge Ram 1500

    -

    Maintenance & Repair

  • Truck won't turn over or start 4 answers

    Parked the truck one day. The next day went to start it up. The gauges go up once key is turned on but when I go to start the truck all the gauges drop to the bottom and nothing happens. Doesn't even...

    1998 Dodge Ram 1500 4 Dr Laramie SLT 4WD Extended Cab SB

    -

    Maintenance & Repair

Search Dodge Ram 1500 Questions

Dodge Ram 1500 Experts

#1 Dan Connell
Dan Connell
Reputation 6,160
#2 pudgybear
pudgybear
Reputation 6,020
#3 dandyoun
dandyoun
Reputation 5,400
View All

Related Models For Sale

Used Ford F-150
2,055 Great Deals out of 207,336 listings starting at $1,499
Used Chevrolet Silverado 1500
1,773 Great Deals out of 181,200 listings starting at $250
Used Dodge Ram 2500
143 Great Deals out of 5,157 listings starting at $1,499
Used GMC Sierra 1500
761 Great Deals out of 69,125 listings starting at $1,850
Used Toyota Tundra
436 Great Deals out of 34,677 listings starting at $2,990
Used Toyota Tacoma
476 Great Deals out of 41,590 listings starting at $1,995
Used Ford F-250 Super Duty
329 Great Deals out of 46,261 listings starting at $1,450
Used Dodge Dakota
137 Great Deals out of 3,795 listings starting at $1,495
Used Ford Mustang
541 Great Deals out of 45,846 listings starting at $1,999
Used Dodge Ram 3500
75 Great Deals out of 2,198 listings starting at $4,999

Used Cars For Sale

2010 Dodge Ram 1500 For Sale
71 Great Deals out of 1,344 listings starting at $6,900
2009 Dodge Ram 1500 For Sale
39 Great Deals out of 968 listings starting at $4,995
2008 Dodge Ram 1500 For Sale
67 Great Deals out of 1,523 listings starting at $3,900
2007 Dodge Ram 1500 For Sale
57 Great Deals out of 1,383 listings starting at $2,950
2006 Dodge Ram 1500 For Sale
56 Great Deals out of 1,274 listings starting at $3,213

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.